Henry p



--(No Model.)

H.'P. COPE.

SIPHON FOR PLUSHING TANKS.

No. 450,557. 1 atented Apr. 14,1891.

dz, fshtz a 21 v 7: I I I a I 1 i 7 J 4 WW 17m UNITED STATES PATENT ()FFICE.

HENRY P. COPE, OF DETROIT, MICHIGAN, ASSIGNOR TO THE COPE BROTHERS, OF SAME PLACE.

SIPHON FOR FLUSHlNG-TANKS.

SPECIFICATION forming part Of Letters Patent NO. 450,557, dated April 14,1891.

Application filed November 24, 1890. Serial No. 372,518- (No model.)

To all whom, it may concern:

Be it known that I, HENRY P. COPE, of Detroit, in the county of Vayne and State of Michigan, have invented a new and useful Improvement in Siphons for Flushing-Tanks, of which the following is a specification.

This invention has for its object to provide novel means for breaking the siphon action in siphons of flushing-tanks. To accomplish this object my invention involves the features of construction, the combination or arrangement of devices, and the principles of operation hereinafter described and claimed, reference being made to the accompanying d rawings, in which Figure l is a vertical sectional view of a siphon provided with my invention, and Fig. 2 is a similar view showing a slightly-modified construction.

In the drawings, the letter A represents a portion of the flushing-tank, which, as is Well understood, is a water-tight tank inclosing the siphon and holding a sufficient quantity of water, which is usually kept at a predetermined level in the tank by a float-valve. This being common and well understood I have not illustrated it.

B represents the discharge-pipe from the tank, with which the down leg of the siphon connects.

0 represents the down leg, and D the up leg; of the siphon in all the figures.

In Fig. 1, G represents a valve-seat formed on the upper end of pipe B, and F represents a valve formed on the down leg of the siphon and adapted to seat on valve-seat G.

H represents fairleaders in all the figures.

E represents a small pipe located outside of and connected with the down leg C near its bottom, and at the upper end has a small hole K in its cap, this beingat all times above the water-line in the tank.

I represents an eye at the top of the siphon, by which the whole siphon may be raised through a suitable lever. (Not shown.)

, The operation of this construction is as follows: On raising the siphon water rushes through the valve-seat G, and when the siphon is dropped to place and the flow of Water stopped by the valve F establishes the upflow in the up legD and the doWnfioW through the down leg 0. A limited quantity of air constantly enters the down leg of the siphon through hole K, thus rendering the column of water and air in said down leg lighter than it would be it composed of solid water. As the Water falls in the tank the Weight of the column in the up leg of the siphon constantly increases, until finally the up and down columns become so nearly balanced that the siphon action ceases.

In this construction'the hole K must be of limited size compared with the diameter of the pipe E, a hole one-sixteenth of an inch in diameter in a half-inch pipe giving verygood results. By'increasing the size of hole K the siphon can be broken earlier.

In Fig. 2 valveF is carried on thelower end of pipe E, the valve-seat G being formed on an offset on the down leg 0. Lifting the valve; F starts the siphon, and a gradual entrance of air through the hole K and thence through pipe E into leg 0 breaks the siphon in the same manner as it is broken in Fig. 1. The stop e limits the lift of the valve.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

A siphon having an opening from the lower portion of its down leg to a tube or pipe arranged outside the down leg and having an orifice in constant communication with the external atmosphere above the normal waterlevel for the gradual but continuous introduction of air into the down leg for breaking the siphon action of the siphon, substantially as described.

, HENRY P. COPE. Witnesses:

GEO. H. Lornnor, GERTRUDE H. ANDERSON. 

